JPS58207563A - Ball nut device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine tool as a chamber body, and at one time the present invention is combined with a lead screw in order to correctly move an OJ movable machine tool member on a stationary machine tool member along one path. Concerning a motorized nut used in

Various thief machines, especially all the machines! In the design of machines, important design criteria are
It is the ability to move without stopping along a straight path on a machine tool bed, etc. Whenever correct positioning of a movable S member is required, a lead screw and nut, sometimes a combination of a ball-type layer screw and a spherical nut, are used, with the pole nut typically mounted on the movable gJ section. On the other hand, the ball screw is rotatably supported within the fixed part 1 so as to exert a screw force on the closing nut in order to move the OT moving member along the fixed part in response to the rotation of the ball screw. Combination Vt of a target screw and a pole nut to securely move the axis sliding rod of a machine tool on the machine tool bed.
In today's machine tools, 1. Pole screws are typically used for electric motors or semi-pressure motors.
・Raku! Ii1 will be done. Gear comparison l1lt Kaoru-Yoteshichi-
Driving a 4-way screw.

The machine tool performance is superior to that of direct drive with a threaded joint by using an index joint.
11 device or may have a large back play-in receptacle due to the elasticity of the index joint. Moreover, the use of an ear device to connect to the Mori T screw is very convenient since it can be used with the rigidity of the Pole screw.

In order to overcome the drawback of using a gear to connect to a four-wheel screw motor, this V-wheel device t1' is used to increase the sieve value. Furthermore, motor fd? The warping of the ear device when connecting to the motor wheel screw reduces back play compared to connecting to the motor wheel screw through an eye joint.
) However, there is also some inherent back play in the key system, which reduces positioning accuracy.

In comparison, the present invention utilizes a motorized nut in combination with a hard leadscrew to provide a temporary positioning mechanism.

Therefore, the tipping technique is familiar and the aforementioned entry point of the nut positioning device is eliminated.

The purpose of the present invention is to minimize the backlash between the screw and the nut by using a motorized nut combined with a hard lead screw. It is to swallow.

The object of the present invention is to provide a fixed base V between the angle IJb part and the fixed part when the IJ member moves across.
* To obtain a positioning correction with a power nut and a firmly fixed screw.

According to four preferred embodiments of the present invention, the quantity ratio is 1.

The positioning calibration for moving the fiJ moving member with respect to the identification member is performed by screwing a hard lead screw dammed to the fixed part parallel to the movement path at the point of use, and a vertical screw. What is the motorized nut attached to the IJI excitation member so that it moves along the screw?

,! Itl force ratio nut is typically 4f torque.
Part I has a case or frame attached to it [4 motor type. Goosege returns and remains III! j Hiron 7-Tarota is υshi from the main twist, like concentric, 1 in the hollow
I'm here. A pair of nut valleys are installed at both ends of the -4 motor, o -ta, and are threadedly engaged with the lead screw, and the rotor of the vI conductor rotates around the lead screw, and the Tsn Tanabata and c
The IJ sea bream member moves on the hard bottom H along the axis of the lead screw. Correct movement of the moving part on the fixed foot part is made easier by the feedback grass that determines the actual position of the moving part. In fact, the novelty back story is -
The disassembly device t (rθ5a
lver) a! ! Natori.

Therefore, the shaft of the disassembly device is driven by the rotor of a brocade motor.
40 will be given. The disassembly installation output signal, which changes depending on the position of the axis of the disassembly device, and therefore the position of the axis of the 1-conductor motor, leaks into the 1st direct control circuit, and this circuit is shown by the 1st control circuit entering the 1st direct control circuit. The difference between the desired 9-stop position and the actual 1'T@ToH position as indicated by the 1-disassembly installation output signal determines the energized control of the motor.

The features of the invention which are considered novel are particularly set forth within the scope of iI#. However, the present invention, the structure of the bud, and the method for cultivating sea bream have a further purpose.

In addition to the advantages, it is also easier to understand (6゜ Figures 1 and 2 show the construction of machining members 11, such as axis sliding bodies of machine tools, etc.). On a fixed part 14 such as the bed of a machine tool,
11A and 11B show a longitudinal view and an end view, respectively, of a modified positioning scissor 11110 formed according to the present invention for positioning along a straight path. The positioning device #L10 has a threaded screw 16, which typically has a trapezoidal thread, and a pair of fixings 'Alt18 (only one of which is shown) allows it to be attached to the bed 14 of the machine tool.
A lead screw is provided on the bed 14, parallel to the desired communication path of the axial slide 12. The lead screw is bearing in the machine tool bed. In the present invention, the lead screw 16 is fixedly mounted within the bed 14 so that it cannot rotate.

The spirit of the invention is a motorized nut, the nut having a glandular breech pattern lo taken into the slide 14-1 for driving a pair of trapezoidal screw nuts 12a, 22b, respectively, and a pair of The nuts are separated and inserted into the main body. In the Honjo 1111 Fire IJIM example, the prime mover 2o has a four-wheel motor, and its frame has a cap 243.24 at the left end and right end.
b″′C″+14, each with a drilled bolt 25
The sliding body 1 is attached to the sliding body 12 on the bed 14.
It moves together with 2. The end cap, which receives the sight screw 16, has a long bolt 75 with four holes.
a and a nut 26b. - Hironanichiba Ryodoshin 20 has a taran shaft installed between end gears 24a and 24b, and a hollow V-shaped rotor 2.
There are 8.

The rotors each have one bearing 30a, shown
The rotor 2aI is concentrically centered around the lead screw 16. When the stator 21 is excited by the current, the stator generates a rotating magnetic field, which causes the same polar magnetic field to harm the rotor 28V3. The mutual interaction between the rotating magnetic field of the stator and the induced magnetic field of the rotor causes the rotor to rotate within the stator. oak) 22a, 22b
are attached to opposite ends of rotor 28 and are responsive to electrical energization of rotor 28 or stator 27 .
When rotating within the lead screw 16, it moves integrally as a screw along the leadscrew 16.

It's the right place for the slider 12 on the bed 14.

That is, positioning the sliding member in the correct position on the bed is coupled by controlling the excitation of the stator 27 depending on the displacement between the desired and actual position of the sliding member. For this purpose, a feedback conversion element 32 is provided, which element is used in the main pixel array.

vI2I4 motor frame, typically frame yi
The lj section has a temporary disassembly holder attached to the cap 24b.

The ears 34 on the axis of the disassembly fi2 straight 32 meshingly engage with a complementary gear 36 mounted on the outwardly extending surface of the nut lia by means of bolts 31. Therefore, the casting motor rotor 28 and the nuts 22a, 22b respond to the electrical excitation of the stator node I.
, the rotor 36 is driven to rotate the shaft by L minutes N, causing the electric 7 signal to be output to the decomposer, and this signal is in the direction of the decomposer axis, hence the direction of the rotor 2 B CI) angle i) It depends.

The electrical output signal of the disassembly device 32D, which varies depending on the angular direction and therefore the actual position of the slider 12 on the bed 14, is controlled by a numerical control circuit known in the art. Added to 38. Number position flilJ Cm l!
! I M 38 is the clear λ generated in the Theno g collector, etc.
In response to this request, this command is to indicate the position of the sliding body 1 Noriba, and to indicate the position of the sliding body 1, which is the lifeblood of controlling control.
The numerical control circuit receives t, -
It is determined from the distance between the position of the sliding body that is erected by the number rblI command lightning and the actual position of the sliding body indicated by the output signal of the temporary disassembly 32. Place and actual 0) Printing # I+
The output signal for outputting the WJm of the stator 2I by the skin between the positions of The positioning comparison written by LjiC is as follows.
In order to move along the turning member, the light is attached to the headlight. The distance between the nut of the invention, which is concentric with the motor rotor and driven directly, may be able to vibrate at the beginning of operation.

The motorized nut of the present invention has virtually no back play. In addition, the proximal torsion with the tail is strong.

4 oily connections between this member and the moving member
1. Is it a display embodiment of the present invention or a practical example of producing sea bream incorporating the present invention? Although described in great detail in the Loli, the specific devices shown and described are intended solely for the purpose of illustrating the present invention. be done. f: It should be understood that other structures may be incorporated into the M type without departing from the spirit and scope of the invention. For example, in the case of a prime mover, Hl of the illustrated VJ fathom motor can be easily changed to the type of a grazing pressure motor. Furthermore, there are also linear position conversion elements such as horizontal encoders or dimensional position converters.

The rotational feedback deformation element shown as decomposition '&1jlt32 and the direct force can be easily obtained. Also, Shinshin's form 11 Yoshi no tax I, Yoshi and Natsuto are also mentioned in 1, but they are often similar to 0, 1ζ-lunat, bo...
- Other combinations of screws and nuts can be easily replaced, such as the combination of screws and nuts.

The quantity rate of the interval ωd light Figure iA1 is a longitudinal sectional view of the positioning calibration of the present invention.

FIG. 2 is a cutaway end view of the first problem.

10... positioning instruction im, 12... 1 slide, 14...
Bed, 16...planting, 1d...solid shield calibration, 2U
・・Original m1M, 22 a, I)-・J-t, 2
4a, b・-kyazo, 25...r, niru), 25a
...Bolt, 26b...Nut, '17...Stator, 28...Rotor, 30a, b゛°・Bearing, 32...Min.・
...Volt, 38...Circuit.

Hiroharuto logging village time Procedural amendment (voluntary) Yuzuki 3/1988 Commissioner of the Patent Office 1.Display of the incident Showa J’u58 1 + 7’l application No. 43029,,.

2. Name of the invention Paul nut device 3, Supplement 11; Relationship with the case Patent applicant (1-Name: Carney and Trekker)
Corporation 4, Agent 5, "1-i" of Sode iF Order Showa Year Month 8, Contents of Supplementary Engraving of details as attached (no change in content) 388-

Claims (1)

[Claims] 111 axis: A pole nut device used for screw members to attach a sliding body on a bed or the like along a continuous path, and the screw m company and a pole nut device that is firmly attached to the bed. A frame holder is firmly fixed to the sliding body, and a hollow rotary drive rotor is supported within the frame so as to surround the threaded portion. The MiJ prime mover rotor moves the Fiiii + own prime mover. That is, hi 1 grip N Ganzuri Tai Sliding
l] A nut device placed in the hole of the rotor of the original sea bream machine described in 11 and attached to the prime mover, and the rotation of the prime mover is caused by the position of the sliding body in the straight position and the position of the sliding body in the middle. A Jζ-lunut device having a control/reading function that responds to the position of the 111 gripping sea bream body on the front 6 bed. (2) In the goal nut device according to claim 1, the screw member has a trapezoidal lead screw,
The nut device is a round nut device having a trapezoidal helical nut of at least 1 E for threaded engagement with the pole screw. (3) In the mail nut comparison IN set forth in claim 1, an AC induction motor having a frame fixedly attached to the sliding body, and a winding placed in the frame. A ball nut having a wire stator and a rotor which is supported by the induction motor frame so as to be surrounded by a threaded member, and which can be rotated by a turntable with a front 6d threaded part in response to electrical excitation of the stator. (4) In the g-lunut device according to claim 6, the control device comprises: a feedback conversion cable for generating a signal ft4 indicating the height of the sliding body on the bed;
In order to control the excitation of the above-mentioned -guiding seventy-one stator in response to the skin between the position of the self-axis suritaisari jtsu and the actual position, 1 sputum ii, a control circuit responsive to the 111 items indicated, and a jar nut 1 po. (5) In the pole nut tip M described in item 4, the feedback conversion element is mounted on the front motor frame, and generates an electric signal indicating the angular position of the front motor rotor. (6) Correctly move the axis sliding body etc. along the identification part attachment such as the bed. Place the positioning device V. r4i1 Fixed member-L □) su i I'J Parallel to the path of motion of the working member of the moving member -11- A screw firmly attached within the self-fixing member, and ■(J-■Taito H' With the frame attached to the front screw 7a, the front screw 7a is inserted into the frame so as to surround the front screw 7a.
JJA pump with a hollow-bore rotary drive rotor. a nut device mounted in the bore of the pre-at exciter rotor for threading engagement with the screw for movement along the screw when the drive-rotor is rotationally driven; In order to determine the actual position of the front movable member on the fixed mIt, and to control the rotational sound of the prime mover rotor by running between the 10th position of the front moving station V and the actual position, 11m1 A positioning device for a movable member that responds to a command indicating the position of a movable member that responds to a command indicating the position of the identified gun launch. (7) In the movable member positioning device described in item 6, the front threaded member has a trapezoidal thread, and the front dd nut has a trapezoidal thread that engages with the trapezoidal thread. Both have one bell trapezoidal screw nut U] moving B (S
In the positioning mechanism 1 (8) for the sliding member described in claim 6, the front ml sliding member is a variable current member having a frame fixedly attached to the front IC axis sliding member. The induction motor is supported by the induction motor so as to surround the stator coupling wire and the F A positioning device for the movable member having a hollow (L rerotor) that can rotate around the threaded part in response. Directly,) 1111 self-control I&Direct is,
The actual position of the 811 + i rigid body on the bed is connected to a feedback converting element for generating electrical signals, and is coupled to the feedback element as shown in 1116 pi axis #! determined from the position of the sliding body and the output signal of the mill feedback conversion element! The actual position of the surita body [in response to the relationship between me and Nao, I shaved myself - I control the exciting inn of the 71 stator.
J B Nori on the bed 1111 Iwazuri Tai's Bobou no Ichi d? A mouth with a control circuit that responds to commands.
In the positioning calibration of the moving member, the feedback conversion element is
A movable device having an output shaft mounted on the motor frame and rotationally driven by the induction motor to generate an electrical signal indicating the angular position of the induction motor 6-ta. Temporary positioning of parts.